PLATE XIV. 



FIG. 1. Sphrur<ityl.us capitattts, vertical section (X 25). 



FIGS. 2-4. Buds of the same ( x 1~>). 



FIG. 5. Polymastia invagnata, specimen cut in half ; nat. size, p. 15. 



FIG. (I. Vertical section ( x 25). 



FIG. 7. Flagellated chambers (diplodal) (x 100). 



FIG. s. Stellate group of tyles in choanosotne (x 100) ; 8a, separate tyles of stellate groups (x loo) 



FIG. 0. Straight style (x KIOI. 



FIG. 10. Curved style (x 100) ; Ida, narrower head of another spicule (X 100). 



FIG. 11. Sfcrongyle (x 100). 



FIG. 12. Long slender tylu (X 100). 



FIGS. 13, 14. Cortical tyles ( X 100). 



FIG. 15. Choauosomal tyles (x 100) ; 15a, the same (x 100). 



